<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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<body>
  
</body>
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<script>
// 英文：
  // result - 结果

// 求 1+2+3+...+100 之和

var result = 0;
var i = 1;

while (i <= 100) {
  result += i;

  i++;
}

console.log(result);

</script>